Originally Posted by dorkbert
curious you would think the 28 pin is hard to find; I got mine off a fleabay vendor. the usb cable and satellite radio antenna on the other hand I have absolutely no luck whatsoever. For GPS I used GPS Antenna for ECLIPSE AVN726E AVN5533 AVN5435 AVN30D. The common Motorola antenna adapter won't work with the F10. I had to get the adapter of a Toyota/Lexus.
I could not find a place to buy a single 28pin connector. I saw whole sale people from china that has them available in bulk. May be I don't know enough about this stuff. Sounds like you done similar project? Thanks for the GPS antenna suggestion. I'll let you know if I get any info about the USB port. For the Satellite antenna you'll have to buy it from Subaru.